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3 years ago

What is 5(4c-2d)+2d-6(d-3c)

2 answers:

7 0

5(4c−2d)+2d−6(d−3c). Distribute: =(5)(4c)+(5)(−2d)+2d+(−6)(d)+(−6)(−3c) =20c+−10d+2d+−6d+18c. Combine Like Terms: =20c+−10d+2d+−6d+18c =(20c+18c)+(−10d+2d+−6d) =38c+−14d.

kari74 [83]3 years ago

6 0

Hi

5(4c-2d) + 2d - 6(d-3c) = 20c - 10d + 2d - 6d + 18c

5(4c-2d) = 5(4c)+5(-2d) = 20c-10d
- 6(d-3c) = -6(d)-6(-3c) = -6d+18c

20c - 10d + 2d - 6d + 18c = 20c + 18c - 10d - 6d + 2d = 38c - 14d

20c+18c = 38c
-10d-6d+2d = -16d+2d = -14d

Answer: 38c-14d

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Step-by-step explanation:

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$\begin{array}{cc}x & {f(x)} & -1&-9&0&-1&1&7 \ \end{array}$

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Solving (a): Compare the slopes

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$m = \frac{f(x_2) - f(x_1)}{x_2 - x_1}$

This gives:

$m = \frac{f(0) - f(1)}{0 - 1}$

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Substitute values for f(0) and f(1)

$m = \frac{-1 - 7}{- 1}$

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$g(x) = mx + b$

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Solving (b): Compare the y intercept

y intercept is when $x = 0$

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3 years ago

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Keith_Richards [23]

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By law of cosines,

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